Cable clamp



c,w. AND J. T. KEMPER. CABLE CLAMP. APPLICATION FILED AFR-22. I921 1,41 1,730; A Patented Apr. 4, 1922.

I iv 5 6 I I E Hit [5 C 12 W4 13 7 l 6 v C t mvsmoas UNITED STATES, PATENT OFFICE.

CHARLES W. KEMPER AND J'QHN T. KEMIPER, OF ALAMEDA, CALIFORNIA.

CABLE CLAMP.

Original application filed. November 3, 1920, Serial No. 421,440. Divided and this application filed April To all whom it may concern:

Be it known that we, (lrninnns VJ. KEMPER and JOHN T. Kmurnn, citizens of the United States, residing at Alameda, in the county of Alameda and State of California, have.

invented certain new and useful Improvements in Cable Clamps, of which the following is a specification.

This invention relates to a cable clamp of the type shown in our United States Patent No. 1,366,007 of January 18, 1921, and is a division of our eo-pending application Serial No. 421,440, filed November 3, 1920.

One object of the present invention is to provide an improvement in the jamming rollers used in clamps of this kind whereby they may be readily inserted and retained in the clamp structure.

A further object is to provide a means for retaining and guiding the rollers, which means may be used to hold the roller out of operative position prior to the insertion of cable ends in the clamp, and to prevent displacement of the roller after it has been moved to clamping position.

Our invention may be readily understood by reference to the accompanying drawings, in which:

Fig. 1 is a side view, partly in section and partly in elevation, showing the clamp in engagement with a cable;

Fig. 2 is a cross section on line II--I1 of Fig. 1;

Fig. 3 is a cross section on line III-J11 of Fig. 1.

Referring to the drawings, A indicates generally the clamp constructed in accordance with our invention. The clamp preferably consists of an integral body having a pair of side walls 5 and 6 connected by portions B and C. Formed within the walls of the body are two triangular chambers 7 and 8, the apexes of which extend toward each other and communicate through the central chamber or neck portion 9, so that an opening extends through the casing. The upper section of wall B consists of a horizontal portion 10 and an inclined portion 11. This inclined portion forms an acute angle with relation to the cable ends 12 and 13, which pass through the hollow interior of the body.

The portion C of the body is similarly formed, with horizontal and angular por- Serial No. 463,664.

tions 10 and 11 respectively, but the angular portion extends to the opposite side of cable end 12 and 13 from the angular portion 1]. Portions 10 and 10 are parallel, as are also portions 11 and 11. By this arrangement, it will be seen that a portion of one of the triangular chambers at one end 'of the casing extends to one side of the cable ends, and the corresponding portion of the similar triangular chamber at the other end extends to the opposite side of the cable ends. In each of these offset portions of the chambers, is a roller 14.

The rollers 14 are inserted into the respective chambers through the open ends thereof. In the side faces 5 and 6 are opposed diagonally extending guide slots 15, which are parallel with the inclined sides 11 and 11, and consequently at an angle tothe cable ends 12 and 13. After the rollers have been inserted in the chambers, they are properly positioned between the slots 15 and a wire shaft or pin 16 is passed through an opening in the center of the rollers. The projecting portions of these wires, engaging the side of the slots 15, serve to retain the rollers in place and to guide them in their movement toward or away from the cable. The rollers are preferably concaved, as shown.

Suitably positioned on the body of the clamp, such as along the edges 11 and 11 are serrated ribs or fins 17. The wire 16 may be bent from the shape shown in Fig. 3 to that shown in Fig. 2, so that its ends are twisted together and the loop thus formed engages in one of the serrations on the fins.

In operation, the wire 16, after being passed through the roller, is bent and its ends joined and the loop positioned. to engage one of the serrations at the point furthest from the cable, so that the roller is held out of cable engaging position. After the ends of the cable have been positioned in the clamp, the loop is disengaged from the rib and the roller is moved down into clamping position. The ends of the wire are then twisted to engage one of the notches nearer the wire, and the roller is thus retained against movement and out of damp ing relation.

By this arrangement, the rollers may not become lost or displaced, and they may be conveniently held at a desired position. We do not claim in this application a clamp having rollers therein in which pins are in- Patented Apr. 4, 1922.

and engaging means on the casing for hold ing the rolleragainst movement in any one of a plurality of positions to which it may be adjusted. V

2. A'cable clamp comprising a casing hat ing an opening therethrough through Which ca; les may be passed, a cable engaging roller movable in the opening, the casing having oppositely positioned slots therein, means passing through the roller and slots to guide the roller. along the slot and provide a support for the rollers, and means, on the casing cooperating With said means passing through the roller for adjustably retaining the roller in position.

3. A cable clamp comprising a casing havin an opening therethrough throughwhich ca les may be passed, said casing having oppositely positioned slots in the sides thereof, a roller movable in the opening Within the casing, and a flexible shaft passing through the roller and slots, the ends of the shaft be- ,vse

7 pair of oppositely positioned slots in the sides thereof, a serrated rib on the casing, a roller in the opening in the casing, and a flexible shaft assing through the roller and slots for guiding the roller and retaining it in the casing, the ends of said shaft being bent to co-operate with the serrated rib to hold the roller in the different positions to which it may be adjusted. A cable clamp comprising a casing having an opening through its interior through which cables may be-pamed, the opening being in the form of two triangle-shaped chambers connected through a narrowneck portion, the chambers being oifset in opposite directions relatively to the position in Which the cables are adapted to lie, the easing having guide slots formed in the offset portion of each of the chambers, a roller in each of the chambers, a shaft for each roller which passes through the roller and through the guide slots, and means on the casing cooperating with the ends of the shafts for adjustably holding the rollers in position.

In testimony whereof we afiix our signatures. CHARLES W. KEMPER. JOHN T. KEMPER. 

